import axios from "axios";
import { Notification, MessageBox, Message, Loading } from "element-ui";
import store from "@/store";
import { getToken } from "@/utils/auth";
import errorCode from "@/utils/errorCode";
import { tansParams, blobValidate } from "@/utils/ruoyi";
import cache from "@/plugins/cache";
import { saveAs } from "file-saver";

let downloadLoadingInstance;
// 是否显示重新登录
export let isRelogin = { show: false };

axios.defaults.headers["Content-Type"] = "application/json;charset=utf-8";
// 创建axios实例
const service = axios.create({
    // axios中请求配置有baseURL选项，表示请求URL公共部分
    baseURL: process.env.VUE_APP_BASE_API,
    // 超时
    timeout: 60 * 1000,
});

// request拦截器
service.interceptors.request.use(
    config => {
        // 是否需要设置 token
        const isToken = (config.headers || {}).isToken === false;
        // 是否需要防止数据重复提交
        const isRepeatSubmit = (config.headers || {}).repeatSubmit === false;
        if (getToken() && !isToken) {
            config.headers["Authorization"] = "Bearer " + getToken(); // 让每个请求携带自定义token 请根据实际情况自行修改
        }
        // get请求映射params参数
        if (config.method === "get" && config.params) {
            let url = config.url + "?" + tansParams(config.params);
            url = url.slice(0, -1);
            config.params = {};
            config.url = url;
        }
        if (!isRepeatSubmit && (config.method === "post" || config.method === "put")) {
            const moment = require("moment");
            if (config.data) {
                if (config.data.updateTime !== undefined) {
                    config.data.updateTime = moment().format("YYYY-MM-DD HH:mm:ss");
                }
                if (config.data.updatetime !== undefined) {
                    config.data.updatetime = moment().format("YYYY-MM-DD HH:mm:ss");
                }
            }
            const requestObj = {
                url: config.url,
                data: typeof config.data === "object" ? JSON.stringify(config.data) : config.data,
                time: new Date().getTime(),
            };
            const sessionObj = cache.session.getJSON("sessionObj");
            if (sessionObj === undefined || sessionObj === null || sessionObj === "") {
                cache.session.setJSON("sessionObj", requestObj);
            } else {
                const s_url = sessionObj.url; // 请求地址
                const s_data = sessionObj.data; // 请求数据
                const s_time = sessionObj.time; // 请求时间
                const interval = 1000; // 间隔时间(ms)，小于此时间视为重复提交
                if (s_data === requestObj.data && requestObj.time - s_time < interval && s_url === requestObj.url) {
                    const message = "数据正在处理，请勿重复提交";
                    console.warn(`[${s_url}]: ` + message);
                    return Promise.reject(new Error(message));
                } else {
                    cache.session.setJSON("sessionObj", requestObj);
                }
            }
        }
        return config;
    },
    error => {
        console.log(error);
        Promise.reject(error);
    }
);

// 响应拦截器
service.interceptors.response.use(
    res => {
        // 未设置状态码则默认成功状态
        const code = res.data.code || 200;
        // 获取错误信息
        const msg = errorCode[code] || res.data.msg || errorCode["default"];
        // 二进制数据则直接返回
        if (res.request.responseType === "blob" || res.request.responseType === "arraybuffer") {
            return res.data;
        }
        if (code === 401) {
            if (!isRelogin.show) {
                isRelogin.show = true;
                MessageBox.confirm("登录状态已过期，您可以继续留在该页面，或者重新登录", "系统提示", {
                    confirmButtonText: "重新登录",
                    cancelButtonText: "取消",
                    type: "warning",
                })
                    .then(() => {
                        isRelogin.show = false;
                        store.dispatch("LogOut").then(() => {
                            location.href = "/index";
                        });
                    })
                    .catch(() => {
                        isRelogin.show = false;
                    });
            }
            return Promise.reject("无效的会话，或者会话已过期，请重新登录。");
        } else if (code === 500) {
            // Message({
            //   message: msg,
            //   type: 'error'
            // })
            return Promise.reject(new Error(msg));
        } else if (code !== 200) {
            Notification.error({
                title: msg,
            });
            return Promise.reject("error");
        } else {
            return res.data;
        }
    },
    error => {
        console.log("err" + error);
        let { message } = error;
        if (message == "Network Error") {
            message = "后端接口连接异常";
        } else if (message.includes("timeout")) {
            message = "系统接口请求超时";
        } else if (message.includes("Request failed with status code")) {
            message = "系统接口" + message.substr(message.length - 3) + "异常";
        }
        Message({
            message: message,
            type: "error",
            duration: 5 * 1000,
        });
        return Promise.reject(error);
    }
);

// 通用下载方法
export function download(url, params, filename) {
    downloadLoadingInstance = Loading.service({ text: "正在下载数据，请稍候", spinner: "el-icon-loading", background: "rgba(0, 0, 0, 0.7)" });
    return new Promise((resolve, reject) => {
        service
            .post(url, params, {
                transformRequest: [
                    params => {
                        return tansParams(params);
                    },
                ],
                headers: { "Content-Type": "application/x-www-form-urlencoded" },
                responseType: "blob",
            })
            .then(async data => {
                const isLogin = await blobValidate(data);
                if (isLogin) {
                    const blob = new Blob([data]);
                    saveAs(blob, filename);
                } else {
                    const resText = await data.text();
                    const rspObj = JSON.parse(resText);
                    const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode["default"];
                    Message.error(errMsg);
                }
                downloadLoadingInstance.close();
                return resolve(true);
            })
            .catch(r => {
                console.error(r);
                Message.error("下载文件出现错误，请联系管理员！");
                downloadLoadingInstance.close();
                return reject();
            });
    });
}

// 通用上传方法
export function upload(url, file, data) {
    // 创建FormData对象
    const formData = new FormData();
    formData.append("file", file); // 字段名需与后端一致
    if (data != null) {
        Object.keys(data).forEach(key => {
            formData.append(key, data[key]);
        });
    }
    return new Promise((resolve, reject) => {
        service
            .post(url, formData, {
                headers: {
                    "Content-Type": "multipart/form-data", // 必须设置
                },
                // 可选：上传进度监控
                onUploadProgress: progressEvent => {
                    const percent = Math.round((progressEvent.loaded * 100) / progressEvent.total);
                    console.log(`上传进度: ${percent}%`);
                },
            })
            .then(response => {
                console.log("上传成功:", response.data);
                resolve(response.data);
            })
            .catch(error => {
                console.error("上传失败:", error.response?.data || error.message);
                reject(error);
            });
    });
}

export default service;
